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Molecular detection and serotypic analysis of enterovirus RNA in archival specimens from patients with acute myocarditis.
  1. F. Nicholson,
  2. J. F. Ajetunmobi,
  3. M. Li,
  4. E. A. Shackleton,
  5. W. G. Starkey,
  6. S. J. Illavia,
  7. P. Muir,
  8. J. E. Banatvala
  1. Department of Virology, United Medical School, Guy's and St Thomas', (St Thomas' campus) London.

    Abstract

    OBJECTIVE--To determine whether enterovirus RNA can be demonstrated in archival necropsy material in acute myocarditis. DESIGN--Analysis of paraffin embedded myocardial tissue from cases of acute myocarditis. SETTING--University virology department. METHODS--Extraction of RNA from tissue followed by polymerase chain reaction (PCR) and DNA sequence analysis. PATIENTS--Six patients with histologically proven myocarditis and eight controls. RESULTS--Enterovirus RNA was identified in 5 of 6 patients with myocarditis and in none of the controls. The nucleotide sequences of the PCR products showed greatest similarity to group B coxsackieviruses, particularly coxsackievirus B3. CONCLUSION--This study indicates that archival tissue samples, even histologically stained tissue sections, can be used to study the role of enteroviruses in myocardial disease using molecular detection techniques. If a predominant role for coxsackievirus B3 in myocarditis is confirmed by further study, this may have implications for the development of a specific vaccine.

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